Now let’s add jets to our analysis. We will apply cuts on pT and η before writing their four momenta to the output ntuple. The text in our text configuration to do this will be highly reminiscent of the text used to add electrons and muons to our analysis.
Begin by scheduling the jet analysis sequence. Do this by adding
the following lines to config.yaml
:
# Define Jet container, JVT, FJVT, systematic model, and
# apply base pT/eta selection, etc.
Jets:
- containerName: 'AnaJets'
jetCollection: 'AntiKt4EMPFlowJets'
runJvtSelection: False
runJvtEfficiency: False
PtEtaSelection:
minPt: 45000.0
maxEta: 4.5
This schedules the implementation of calibration and selection for Anti-kt
EMPFlow
jets with R = 0.4. Note that this implements a selection using
Jet Vertex Tagging (JVT). In addition, it applies some basic selection
criteria for our jets. We want to only select jets with pT > 45
GeV and |η| < 4.5.
As we did with electrons and muons, we want to ensure that the jets information
is written to the output ntuple. To do so, add to the existing Thinning
and
Output
blocks in config.yaml
. Let’s start with the thinning block. Add the
:following lines into the Thinning
block, indented the same amount as the
electrons and muons information:
- containerName: 'AnaJets'
outputName: 'OutJets'
...
Now add jets to the output ntuple by putting the following lines in config.yaml
,
in the Output
block under containers:
:
'jet_': 'OutJets'
Rerun your code, then re-examine your output ntuple to look for the jet information. Commit and push your changes when everything is running correctly.
Try running your algorithm using a different AntiKt4
jet container.
Check the input file for the container options you have. How does your
output change with these new jets?